CN114145290A - Efficient long-acting insect sex attractant core and manufacturing method thereof - Google Patents
Efficient long-acting insect sex attractant core and manufacturing method thereof Download PDFInfo
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- CN114145290A CN114145290A CN202110614434.0A CN202110614434A CN114145290A CN 114145290 A CN114145290 A CN 114145290A CN 202110614434 A CN202110614434 A CN 202110614434A CN 114145290 A CN114145290 A CN 114145290A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
- A01N25/10—Macromolecular compounds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M1/00—Stationary means for catching or killing insects
- A01M1/02—Stationary means for catching or killing insects with devices or substances, e.g. food, pheronones attracting the insects
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/18—Vapour or smoke emitting compositions with delayed or sustained release
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/22—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients stabilising the active ingredients
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
- A01N31/02—Acyclic compounds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N35/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical
- A01N35/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having two bonds to hetero atoms with at the most one bond to halogen, e.g. aldehyde radical containing aliphatically bound aldehyde or keto groups, or thio analogues thereof; Derivatives thereof, e.g. acetals
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/02—Saturated carboxylic acids or thio analogues thereof; Derivatives thereof
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Abstract
The invention relates to the technical field of lure, in particular to a high-efficiency long-acting insect sex lure and a manufacturing method thereof. The attractant core comprises a carrier and a sex attractant, and the inventor finds that by using triglyceride as a solvent, the problems of short lasting period and environmental pollution of high-volatility methylene dichloride, normal hexane, petroleum ether, acetone and the like are solved, the synergistic effect can be exerted, the insect attracting effect of the attractant core is obviously improved, the carrier and the solvent provided by the invention can be used for slow release and synergy of various pheromones, such as saturated or monoenes, dienes (conjugated or non-conjugated dienes) or polyene esters (such as acetic esters), aldehydes, ketones, alcohols, epoxy compounds and hydrocarbon pheromones, and the attractant core has high lasting period and insect attracting effect on various pests, such as black cutworms, prodenia litura, tobacco budworms, cotton bollworms and tobacco pink borers.
Description
Technical Field
The invention relates to the technical field of lure, in particular to a high-efficiency long-acting insect sex lure and a manufacturing method thereof.
Background
In recent years, with the improvement of the requirement of green prevention and control technology of agricultural pests, the insect sex attraction technology is developed rapidly. Pheromones from lepidopteran and coleopteran insects have been widely used. However, in the industrial production process of the insect sex attractant core, no standard production process (original medicine synthesis, formula, equipment and process) exists so far, and the preparation link is particularly prominent. At present, the product of core is lured to insect sex, adopts traditional natural devulcanized rubber stopper or polyethylene plastic tubing as the carrier mostly, and its drawback is:
the natural desulfurization rubber plug has complex carrier components, and can provide effective protection and chemical stability for saturated or mono-olefin structure-containing alcohol, aldehyde and ester sex pheromone components. However, conjugated diene sex pheromones or pheromones (such as prodenia litura sex pheromone) with diene and aldehyde as functional groups are easy to isomerize in the carrier and convert into inactive isomers, and sometimes the isomers have inhibition effect on the sex pheromone, thereby bringing adverse effect to field pest trapping.
The polyethylene pipe has high hardness, and is not beneficial to being bound in fields; the polyethylene pipe has high air permeability, which causes the field lasting period of the insect sex attractant core to be too short. The traditional insect sex attractant mostly adopts dichloromethane, normal hexane, petroleum ether, acetone and the like as solvents, and the solvents generally have the characteristics of strong volatility, flammability and explosiveness, environmental pollution and easy damage to human health. Meanwhile, the solvents do not have any synergistic effect in the insect sex attractant, and even have the function of avoiding target insects.
Disclosure of Invention
In order to solve the problems, the invention provides a high-efficiency long-acting insect sex attractant core, which comprises a carrier and a sex attractant, wherein the sex attractant is positioned in the carrier;
the sex attractant comprises insect active components and a solvent, wherein the weight ratio of the insect active components to the solvent is 1: (20-100), wherein the solvent is one or more selected from triglyceride, dichloromethane, n-hexane, petroleum ether and acetone.
In a preferred embodiment of the present invention, the triglyceride comprises one or more of fatty acid triglyceride, aromatic acid triglyceride and cyclic fatty acid triglyceride.
In a preferred embodiment of the present invention, 1 to 3 fatty acids in the fatty acid triglyceride are unsaturated fatty acids.
In a preferred embodiment of the present invention, the carrier is selected from a rubber carrier and/or a polyolefin carrier, and one side of the carrier is provided with an opening for injecting the sex attractant into the carrier.
As a preferred technical solution of the present invention, the rubber-based carrier is made of one or more materials selected from natural devulcanized rubber, styrene-butadiene rubber, silicone rubber, butadiene rubber, chloroprene rubber, and fluororubber.
As a preferred technical scheme of the invention, a rubber plug is arranged at the opening of the rubber carrier and used for sealing the opening, and cavities are arranged inside the rubber carrier and the rubber plug.
In a preferred embodiment of the present invention, the rubber-based carrier has a cross-sectional outer diameter that increases from top to bottom, and the cross-sectional outer diameter of the rubber-based carrier on the lower side is 8 to 15 mm.
As a preferable technical scheme of the invention, the polyolefin carrier is made of one or more materials selected from polyethylene, polypropylene and polyvinyl chloride.
As a preferable technical scheme of the invention, the thickness of the polyolefin carrier is 0.4-0.7 mm.
The second aspect of the invention provides a preparation method of the high-efficiency long-acting insect sex attractant core, which comprises the following steps: and injecting the sex attractant into the carrier, and sealing to obtain the lure core.
Compared with the prior art, the invention has the following beneficial effects:
(1) the inventor finds that by using triglyceride as a solvent, the problems of short lasting period and environmental pollution of high-volatility methylene dichloride, normal hexane, petroleum ether, acetone and the like are avoided, the synergistic effect can be achieved, and the insect-attracting effect of the lure is remarkably improved.
(2) According to the invention, the silicon rubber is used as a carrier, so that the influence on the structure of insect active components containing diene or alcohol, aldehyde and the like can be avoided, the lasting period is improved, and the effects of the lasting period and the insect trapping can be better when the insect attractant is used at lower temperature and higher temperature.
(3) In addition, polyvinyl chloride with good air tightness can be used as a carrier, the applicable types of the insect active components can be expanded by controlling the heating and sealing temperature, the carrier thickness and the like, the effect on the duration period when the carrier is used in a high-temperature environment is reduced while the duration period is high for pheromones such as aldehydes and alcohols.
(4) The carrier and the solvent provided by the invention can be used for slow release and lasting effect of various insect active components, such as esters (such as acetate) of saturated or monoene, diene (conjugated or non-conjugated diene) or polyene, aldehydes, ketones, alcohols, epoxy and hydrocarbon pheromone, and have the effects of prolonging the lasting period and enhancing the insect attracting effect on various pests, such as black cutworm, prodenia litura, oriental tobacco budworm, cotton bollworm, tobacco pink borer, tobacco beetle, spodoptera and other pests.
Drawings
Fig. 1 is a schematic view of a rubber-based carrier.
FIG. 2 is a schematic view of a polyolefin-based carrier.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.
The present invention is illustrated by the following specific embodiments, but is not limited to the specific examples given below.
The invention provides a high-efficiency long-acting insect sex attractant core, which comprises a carrier and a sex attractant, wherein the sex attractant is positioned in the carrier.
[ sex attractant ]
The insect sex pheromone is an information chemical substance which is secreted and released to the outside of the body by insects and attracts homosexual individuals to mate; the insect sex attractant refers to an artificially synthesized insect active component or an analogue thereof. In one embodiment, the sex attractant of the present invention comprises an insect active ingredient, a solvent, and an adjuvant in a weight ratio of 1: (20 to 99.9): (0.2 to 5.0), there may be mentioned, for example, 1: 20: 0.5, 1: 30: 0.33, 1: 40:1.25, 1: 50:2.2, 1: 60:1.6, 1: 70: 1.5, 1: 100: 5.0.
insect active ingredient
The active components of the sex attractant of different insects are different. Most of the esters (such as acetate), aldehydes, ketones, alcohols, hydrocarbon pheromones are saturated or mono-olefin, diene (conjugated or non-conjugated diene) or polyene, and the number of carbon atoms is generally between 5 and 25. Examples of the alcohol include trans 8, trans 10-dodecadienyl-1-ol, cis 7, cis 11-hexadecadien-1-yl acetate, cis 7-tetradecenyl acetate, trans 7-tetradecenyl acetate, cis 9-dodecenyl acetate, cis 9-hexadecadienal, cis 11-hexadecadienal, cis 7-eicosa-11-one, and 14-methyl-1-octadecene.
Solvent(s)
In one embodiment, the solvent of the present invention is selected from one or more of triglyceride, dichloromethane, n-hexane, petroleum ether, acetone, preferably triglyceride.
Preferably, the triglyceride of the present invention comprises one or more of fatty acid triglyceride, aromatic triglyceride and cycloaliphatic triglyceride, preferably fatty acid triglyceride. More preferably, 1-3 fatty acids in the fatty acid triglyceride of the present invention are unsaturated fatty acids. The fatty acid triglyceride is prepared from glycerol with one molecule and fatty acid with 3 molecules, wherein 1, 2 or 3 of the fatty acid with 3 molecules are unsaturated fatty acid.
Examples of fatty acid triglycerides include, but are not limited to, 1, 3-dioleoyl-2-palmitoyl triglyceride, 1-linoleoyl-2-myristoyl-3-oleic triglyceride, trihexanoic acid ester, tricaprylin acid ester, tricaprin acid ester, triolein acid ester, tripalmitoyl acid ester, triolein acid ester, triacontanoic acid tetraenoic acid ester, docosahexaenoic acid (DHA) triglyceride, eicosapentaenoic acid (EPA) triglyceride. Further preferably, the fatty acid triglyceride of the present invention comprises fatty acid triglyceride C10-C16.
The inventor finds that high-volatility dichloromethane, normal hexane, petroleum ether and acetone are generally used as volatile solvents in the insect sex attractant, so that components such as pheromone in the insect sex attractant are permeated into a carrier to play a role in attracting insects and slowly releasing insects, but the problem of short lasting period is caused, and the like, and the solvents can cause environmental pollution in the volatilization process, influence the health of human bodies and even prevent the performance of the insect attracting effect of the sex attractant. The inventor surprisingly finds that by using the triglyceride as the solvent, the problems of short duration and environmental pollution are avoided, the synergistic effect can be exerted, and the insect-attracting effect of the lure is obviously improved.
This is probably because, by adding triglycerides, especially triglycerides containing unsaturated fatty acids, during the sustained release process, entanglement or intermolecular interaction with saturated or mono-olefinic, diolefinic (conjugated or non-conjugated dienes) or polyenic esters (such as acetates), aldehydes, ketones, alcohols, epoxies, hydrocarbon pheromones on the one hand, and penetration into the carrier on the other hand, occurs due to the action of the three fatty acid ester chains of the triglycerides, and by using suitable triglycerides, especially triglycerides containing unsaturated fatty acids, synergistic interaction with pheromone molecules is possible, promoting the insect-attracting effect of the lure.
And the inventor finds that when the fatty chain in the triglyceride is short, the duration period is reduced, and when the chain of the triglyceride is long, the insect-attracting effect and the duration period of the lure are influenced. In addition, a slight decrease in the exercise capacity of the unsaturated fatty chain, and an increase in the interaction with pheromone or the like, as compared with the saturated fatty chain, also lead to an increase in the duration of the wick and the insect-attracting effect of the triglyceride using the unsaturated fatty acid.
Still more preferably, the fatty acid triglyceride of the present invention comprises fatty acid triglyceride C18-C22. In a preferred embodiment, the weight ratio of the fatty acid esters of triglycerol 10-C16 and the fatty acid esters of triglycerol C18-C22 of the present invention is 1: (0.1 to 0.2), there may be mentioned, for example, 1: 0.1, 1: 0.11, 1: 0.12, 1: 0.13, 1: 0.14, 1: 0.15, 1: 0.16, 1: 0.17, 1: 0.18, 1: 0.19, 1: 0.2.
in a more preferred embodiment, the sex attractant of the invention further comprises an adjuvant.
Auxiliary agent
The auxiliary agent of the present invention includes, for example, a preservative, a stabilizer, and an anti-ultraviolet agent.
Examples of preservatives include, but are not limited to, tert-butylhydroquinone TBHQ, 2, 6-di-tert-butyl-4-methylphenol BHT, butyl hydroxyanisole BHA. In one embodiment, the weight ratio of the preservative to the solvent is (0.2-5.0): (20 to 99.9).
Examples of stabilizers include, but are not limited to, vitamin E, hydroxy polyacids such as 2-hydroxymethylsuccinic acid, citric acid, tartaric acid. In one embodiment, the weight ratio of the stabilizer to the solvent is (0.2 to 5.0): (20 to 99.9).
Examples of the anti-ultraviolet agent include, but are not limited to, salicylic acid esters, benzophenones, benzotriazoles, substituted acrylonitriles, triazines, and hindered amine ultraviolet absorbers. In one embodiment, the weight ratio of the anti-ultraviolet agent to the solvent is (0.2-5.0): (20 to 99.9).
[ Carrier ]
The lure core can be suitable for various pests, and the requirements on the lasting period of the lure core are different due to different pest attack periods, such as prodenia litura, the field attack period of which is generally more than 3 months, so that the carrier is required to relatively stably and continuously release the active components of the prodenia litura sex attractant within the period of more than 3 months; and because the active components of different insect sex attractants are different and the slow release rates of different active components in the carrier are greatly different, especially for conjugated dienes or pheromones containing alcohol, aldehyde and the like, the problems of too high volatilization speed or isomer interference and the like can exist, and therefore, the design of a solvent of the sex attractant, a lure carrier and the like is needed.
In one embodiment, the support of the present invention is selected from a rubber-based support and/or a polyolefin-based support. One side of the carrier is provided with an opening for injecting the sex attractant into the carrier.
Rubber carrier
In one embodiment, the material of the rubber-based carrier of the present invention is selected from one or more of natural devulcanized rubber, styrene-butadiene rubber, silicone rubber, butadiene rubber, chloroprene rubber, and fluororubber, and is preferably silicone rubber.
Preferably, a rubber plug is arranged at the opening of the rubber carrier and used for sealing the opening, and a cavity is arranged inside the rubber carrier and the rubber plug. More preferably, the rubber stopper of the present invention is made of one or more materials selected from natural devulcanized rubber, styrene-butadiene rubber, silicone rubber, butadiene rubber, chloroprene rubber, and fluororubber, and is preferably made of silicone rubber.
As shown in fig. 1, it is further preferable that the rubber-like carrier of the present invention has an increased outer diameter in section from top to bottom. The rate of the increase of the outer diameter of the rubber-like carrier from top to bottom can be constant, or gradually reduced, or gradually increased, or partially reduced, constant or increased, without specific limitation, so that the rubber-like carrier is in a truncated cone shape with a side profile being straight, concave, convex and the like.
Still more preferably, the upper side of the rubber-like carrier of the present invention is provided with an opening, and the inner diameter of the opening is the same as the outer diameter of the rubber stopper. In a preferred embodiment, the rubber stopper of the present invention has an outer diameter of 3 to 7mm, and examples thereof include 3mm, 4mm, 5mm, 6mm and 7mm, and preferably 3 to 6 mm.
In a more preferred embodiment, the rubber-based carrier of the present invention has a cross-sectional outer diameter of 8 to 15mm on the lower side, and may be 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, and preferably 8 to 12 mm.
In a further preferred embodiment, the height of the cavity according to the invention is 6 to 15mm, and there may be mentioned 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, preferably 8 to 13 mm.
In a further preferred embodiment, the rubber-based carrier of the present invention has a thickness of 0.5 to 2mm, and may be, for example, 0.5mm, 0.7mm, 1mm, 1.2mm, 1.5mm, 1.7mm or 2mm, preferably 0.5 to 1.5 mm. The thickness is the thickness of the wall of the carrier.
The invention uses silicon rubber as a carrier, thereby avoiding the influence on the structure of pheromone containing diene or alcohol, aldehyde and the like and improving the lasting period.
The inventor finds that the effect of the attractant core and the attractant effect can be promoted at higher environmental temperature by adding longer-chain triglyceride and shorter-chain triglyceride to act together and controlling the thickness of the carrier, the height of the cavity and the change mode of the outer diameter of the carrier, probably because the carrier with gradually increased outer diameter is used, an opening is arranged at the side with the smallest outer diameter, the attractant is injected into the cavity, and the moving space and speed of the pheromone can be controlled due to the change of the outer diameter and the adjustment of the long-chain triglyceride during the use at higher temperature, so that the effect duration and the attractant effect at high temperature are improved.
In a further preferred embodiment, the total height of the rubber-like carrier and the rubber stopper of the present invention is 10 to 20mm, and may be, for example, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, and preferably 12 to 16 mm. The total height of the rubber carrier and the rubber plug is the total height of the rubber plug after the opening is sealed.
Polyolefin carrier
In one embodiment, the polyolefin-based carrier of the invention is made of one or more materials selected from polyethylene, polypropylene and polyvinyl chloride, preferably polyvinyl chloride.
Preferably, the openings of the polyolefin carrier are sealed by heating at 110-150 ℃, which may be exemplified by 110 ℃, 120 ℃, 130 ℃, 140 ℃ and 150 ℃.
In addition, polyolefins such as polyethylene and the like can be used as a carrier material, but because of their high air permeability and hardness, the duration and field bundling and the like are affected, and for some alcohols or aldehyde pheromones such as cis 5, trans 7-dodecadienal, cis 5, trans 7-dodecadienol and the like, the permeation is difficult to exert, and the inventors found that by using polyvinyl chloride which is more air-tight as a carrier and by controlling the temperature of heat sealing, the type of pheromone can be expanded, and also for aldehydes, alcohols and the like, the duration is high.
As shown in FIG. 2, the polyolefin-based carrier of the present invention has a thickness of 0.4 to 0.7mm, and may be, for example, 0.4mm, 0.5mm, 0.6mm or 0.7 mm. The shape of the polyolefin carrier can be cylindrical, rhombohedral column, hexagonal rhombohedral column and the like, and is not particularly limited.
In addition, the inventor finds that the thickness of the polyolefin carrier has important influence, the proper wall thickness is beneficial to greatly improving the slow release effect, when the wall thickness is less than 0.4mm, the slow release rate of the effective components in the PVC slow release pipe is high, the lasting period of pests such as cotton bollworms, oriental tobacco budworms, tobacco meal moths and the like is basically not more than 45 days, and when the wall thickness is more than 0.7mm, the slow release rate of the effective components in the PVC slow release pipe is too low, the insect trapping amount is reduced, and the requirements of agricultural production cannot be met. A carrier of suitable thickness is used.
And the inventor finds that the thickness of the polyolefin carrier and the temperature of heat sealing also have an influence on the low-temperature duration of the lure, which is probably because when the proper thickness is adopted, when the opening is sealed through proper temperature, the permeation of relatively viscous solvent, especially sex attractant containing long-chain triglyceride, to the wall of PVC and the sealing part of the opening at low temperature can be adjusted, so that the movement of pheromone and the like is prevented from being hindered by the long-chain solvent at low temperature, and the duration and the insect-attracting effect are improved. And when the wall thickness is not appropriate or the opening sealing temperature is high, the slow release of pheromone and the like is not facilitated.
More preferably, the polyolefin-based carrier of the present invention has a length of 50 to 100mm, for example, 50mm, 60mm, 70mm, 80mm, 90mm, and 100 mm.
In order to avoid the decomposition of the lure by light, oxygen, heat and the like in the long-term use process, preservatives, ultraviolet-resistant agents, stabilizers and the like, pheromone, solvent and the like can be added to prepare a sex attractant, and the sex attractant is injected into the carrier and sealed, so that the stability of the pheromone and the carrier in the lure under the conditions of ambient temperature and a lighting lamp is improved. The inventor finds that the carrier and the solvent provided by the invention can be used for slow release and synergism of various pheromones, such as esters (such as acetate), aldehydes, ketones, alcohols, epoxy and hydrocarbon pheromones of saturated or monoene, diene (conjugated or non-conjugated diene) or polyene, and have high lasting period and insect-attracting effect on various pests, such as black cutworm, prodenia litura, oriental tobacco budworm, cotton bollworm and tobacco pink borer.
In a second aspect, the present invention provides a method for preparing a high-efficiency long-acting insect sex attractant core, which comprises: and injecting the sex attractant into the carrier, and sealing to obtain the lure core.
In one embodiment, the method of making the lure of the present invention comprises: and injecting the sex attractant into the rubber carrier, and sealing by using a rubber plug to obtain the lure core.
In one embodiment, the method of making the lure of the present invention comprises: injecting the sex attractant into the polyolefin carrier, and heating and sealing to obtain the lure core.
Examples
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
Example 1
The example provides a high-efficiency long-acting sex attractant core for agrotis ypsilon, which comprises a carrier and a sex attractant, wherein the sex attractant is positioned inside the carrier, the sex attractant comprises an active component, a solvent, a preservative, a stabilizer and an anti-ultraviolet agent, the active component comprises cis 7-dodecene-1-ol-acetate, cis 9-tetradecene-1-ol-acetate and cis 11-hexadecene-1-ol-acetate in a weight ratio of 3:1:1, the solvent is triglyceride, and the weight ratio of the active component to the solvent to the preservative to the stabilizer to the anti-ultraviolet agent is 1: 30: 0.2: 0.1: 0.1, the weight ratio of the triglyceride is 1: 0.12 glycerol tripalmitolate and glycerol triaarachidonate, the carrier is the silicon rubber carrier, silicon rubber carrier from the top down cross-section external diameter increases, the upside of silicon rubber carrier is equipped with the opening, and the opening is sealed with the silicon rubber stopper, the open-ended internal diameter is the same with the external diameter of silica gel stopper, silicon rubber carrier and silica gel stopper inside are equipped with the cavity, the external diameter of silica gel stopper is 3mm, the cross-section external diameter of the downside of silicon rubber carrier is 8mm, the height of cavity is 8mm, the thickness of silicon rubber carrier is 0.7mm, the total height of silicon rubber carrier and silica gel stopper is 12 mm.
The preservative comprises the following components in percentage by weight of 1: BHT and BHA of 2.
The stabilizer is prepared from the following components in a weight ratio of 1: 2 and vitamin E.
The anti-ultraviolet agent is purchased from an alatin network platform.
The embodiment also provides a preparation method of the lure, which comprises the following steps: injecting the sex attractant into the carrier, and sealing with a silica gel plug to obtain the lure core.
Example 2
The example provides a prodenia litura efficient long-acting sex attractant core, which comprises a carrier and a sex attractant, wherein the sex attractant is positioned inside the carrier, the sex attractant comprises an active component, a solvent, a preservative, a stabilizer and an anti-ultraviolet agent, the active component comprises cis 9, trans 11-tetradecadiene-1-ol acetate, cis 9, trans 12-tetradecadiene-1-ol acetate in a weight ratio of 9:1, the solvent is triglyceride, and the weight ratio of the active component, the solvent, the preservative, the stabilizer and the anti-ultraviolet agent is 1: 20: 0.2: 0.1: 0.1, the weight ratio of the triglyceride is 1: 0.18 of glyceryl tripalmitoleate and docosahexaenoic acid triglyceride, wherein the carrier is a PVC pipe, the length is 80mm, the thickness is 0.4mm, and an opening on the side surface of the carrier is heated and sealed at 120 ℃.
The preservative comprises the following components in percentage by weight of 1:1 BHT and BHA.
The stabilizer is prepared from the following components in percentage by weight: 1 and vitamin E.
The anti-ultraviolet agent is purchased from an alatin network platform.
The embodiment also provides a preparation method of the lure, which comprises the following steps: and injecting the sex attractant into the carrier, and heating and sealing to obtain the lure core.
Example 3
The example provides a high-efficiency long-acting sex attractant for oriental tobacco budworms, which comprises a carrier and a sex attractant, wherein the sex attractant is positioned in the carrier and comprises an active component, a solvent, a preservative, a stabilizer and an anti-ultraviolet agent, the active component comprises cis 9-hexadecenal and cis 11-hexadecenal in a weight ratio of 93:7, the solvent is triglyceride, and the weight ratio of the active component to the solvent to the preservative to the stabilizer to the anti-ultraviolet agent is 1: 40: 1: 1.5: 0.5, the weight ratio of the triglyceride is 1: 0.15 glycerol tripalmitolate and glycerol triaarachidonate, the carrier is the silicon rubber carrier, silicon rubber carrier from the top down cross-section external diameter increases, the upside of silicon rubber carrier is equipped with the opening, and the opening is sealed with the silicon rubber stopper, the open-ended internal diameter is the same with the external diameter of silica gel stopper, silicon rubber carrier and silica gel stopper inside are equipped with the cavity, the external diameter of silica gel stopper is 6mm, the cross-sectional external diameter of the downside of silicon rubber carrier is 12mm, the height of cavity is 13mm, the thickness of silicon rubber carrier is 1.3mm, the total height of silicon rubber carrier and silica gel stopper is 16 mm.
The preservative comprises the following components in percentage by weight of 1: BHT and BHA of 2.
The stabilizer is prepared from the following components in a weight ratio of 1:1 and vitamin E.
The anti-ultraviolet agent is purchased from an alatin network platform.
The embodiment also provides a preparation method of the lure, which comprises the following steps: injecting the sex attractant into the carrier, and sealing with a silica gel plug to obtain the lure core.
Example 4
The example provides a high-efficiency long-acting sex attractant for oriental tobacco budworms, which comprises a carrier and a sex attractant, wherein the sex attractant is positioned in the carrier and comprises active components, a solvent, a preservative, a stabilizer and an anti-ultraviolet agent, the active components comprise cis 9-hexadecenal and cis 11-hexadecenal in a weight ratio of 94:6, the solvent is triglyceride, and the weight ratio of the active components, the solvent, the preservative, the stabilizer and the anti-ultraviolet agent is 1: 30: 0.5: 0.3: 0.4, the weight ratio of the triglyceride is 1: 0.15 of glycerol tripalmitoleate and glycerol triaarachidonate, wherein the carrier is a PVC pipe, the length of the PVC pipe is 80mm, the thickness of the PVC pipe is 0.7mm, and an opening in the side surface of the carrier is sealed by heating at 140 ℃.
The preservative comprises the following components in percentage by weight of 1:1 BHT and BHA.
The stabilizer is prepared from the following components in a weight ratio of 1:1 and vitamin E.
The anti-ultraviolet agent is purchased from an alatin network platform.
The embodiment also provides a preparation method of the lure, which comprises the following steps: and injecting the sex attractant into the carrier, and heating and sealing to obtain the lure core.
Example 5
The example provides a prodenia litura high-efficiency long-acting sex attractant core, which comprises a carrier and a sex attractant, wherein the sex attractant is positioned inside the carrier, the sex attractant comprises an active component, a solvent, a preservative, a stabilizer and an anti-ultraviolet agent, the active component comprises cis 9, trans 12-tetradecadiene-1-ol acetate, cis 9 and trans 12-tetradecadiene-1-ol in a weight ratio of 9:1, the solvent is triglyceride, and the weight ratio of the active component, the solvent, the preservative, the stabilizer and the anti-ultraviolet agent is 1: 40: 1: 1.5: 0.5, the weight ratio of the triglyceride is 1: 0.14 glycerol tripalmitolate and glycerol triaarachidonate, the carrier is the silicon rubber carrier, silicon rubber carrier from the top down cross-section external diameter increases, the upside of silicon rubber carrier is equipped with the opening, and the opening is sealed with the silicon rubber stopper, the open-ended internal diameter is the same with the external diameter of silica gel stopper, silicon rubber carrier and silica gel stopper inside are equipped with the cavity, the external diameter of silica gel stopper is 5mm, the cross-sectional external diameter of the downside of silicon rubber carrier is 10mm, the height of cavity is 10mm, the thickness of silicon rubber carrier is 1mm, the total height of silicon rubber carrier and silica gel stopper is 14 mm.
The preservative comprises the following components in percentage by weight of 1: BHT and BHA of 2.
The stabilizer is prepared from the following components in a weight ratio of 1:1 and vitamin E.
The anti-ultraviolet agent is purchased from an alatin network platform.
The embodiment also provides a preparation method of the lure, which comprises the following steps: injecting the sex attractant into the carrier, and sealing with a silica gel plug to obtain the lure core.
Example 6
The example provides a prodenia litura efficient long-acting sex attractant core, which comprises a carrier and a sex attractant, wherein the sex attractant is positioned inside the carrier, the sex attractant comprises an active component, a solvent, a preservative, a stabilizer and an anti-ultraviolet agent, the active component comprises cis 9, trans 11-tetradecadiene-1-ol acetate, cis 9, trans 12-tetradecadiene-1-ol acetate in a weight ratio of 9:1, the solvent is triglyceride, and the weight ratio of the active component, the solvent, the preservative, the stabilizer and the anti-ultraviolet agent is 1: 20: 0.2: 0.1: 0.1, the weight ratio of the triglyceride is 1: 0.18 tripalmitoyl glyceride and docosahexaenoic acid triglyceride, the carrier is the silicon rubber carrier, silicon rubber carrier from the top down cross-section external diameter increases, the upside of silicon rubber carrier is equipped with the opening, and the opening is sealed with the silicon rubber stopper, the internal diameter of opening is the same with the external diameter of silica gel plug, silicon rubber carrier and silica gel plug inside are equipped with the cavity, the external diameter of silica gel plug is 5mm, the cross-section external diameter of the downside of silicon rubber carrier is 10mm, the height of cavity is 10mm, the thickness of silicon rubber carrier is 1mm, the total height of silicon rubber carrier and silica gel plug is 14 mm.
The preservative comprises the following components in percentage by weight of 1:1 BHT and BHA.
The stabilizer is prepared from the following components in percentage by weight: 1 and vitamin E.
The anti-ultraviolet agent is purchased from an alatin network platform.
The embodiment also provides a preparation method of the lure, which comprises the following steps: and injecting the sex attractant into the carrier, and heating and sealing to obtain the lure core.
Comparative example 1
The present example provides a high-efficiency long-lasting oriental tobacco budworm lure, which is similar to example 4, except that the opening of the side surface of the carrier is sealed by heating at 180 ℃.
The embodiment also provides a preparation method of the lure, and the specific implementation mode is the same as that of the embodiment 4.
Comparative example 2
The specific implementation mode of the efficient and long-lasting oriental tobacco budworm lure is the same as that in example 6, except that the weight ratio of the triglyceride to the tripalmitin is glycerol tripalmitin.
The present example also provides a method for preparing the lure as described above, and the specific implementation manner is the same as example 6.
Comparative example 3
The embodiment of the efficient and long-acting luring core for the oriental tobacco budworms is the same as that of embodiment 6, and is different from that of embodiment 6 in that the carrier is a silicon rubber carrier, the outer diameter of the cross section of the silicon rubber carrier from top to bottom is unchanged, an opening is formed in the upper side of the silicon rubber carrier and is sealed by a silicon rubber plug, the inner diameter of the opening is the same as that of the silicon rubber plug, cavities are formed in the silicon rubber carrier and the silicon rubber plug, the outer diameter of the silicon rubber plug is 5mm, the outer diameter of the carrier is 6mm, the height of the cavities is 10mm, the thickness of the silicon rubber carrier is 1mm, and the total height of the silicon rubber carrier and the silicon rubber plug is 14 mm.
The present example also provides a method for preparing the lure as described above, and the specific implementation manner is the same as example 6.
Evaluation of Performance
The lure provided by the embodiment and the comparative example is arranged in a basin trap, the height of the trap is 1.5m, the lure is respectively arranged in a high-temperature zone (wherein the highest average temperature of 5-6 months is about 27-30 degrees, the highest average temperature of 7-8 months is about 31-33 degrees, the lowest average temperature of 5-6 months is about 19-23 degrees, the lowest average temperature of 7-8 months is about 22-23 degrees), a medium-temperature zone (wherein the highest average temperature of 5-6 months is about 26-27 degrees, the highest average temperature of 7-8 months is about 28-29 degrees, the lowest average temperature of 5-6 months is about 18-21 degrees, the lowest average temperature of 7-8 months is about 21-23 degrees), a low-temperature zone (wherein the highest average temperature of 5-6 months is about 24-25 degrees, the highest average temperature of 7-8 months is about 26-28 degrees, and the lowest average temperature of 5-6 months is about 14-18 degrees, respectively with the lowest average temperature of about 18 degrees in 7-8 months), replenishing water and adding washing powder at any time in the trapping process, wherein the insect trapping time of the spodoptera litura is 120 days, the insect trapping time of the oriental tobacco budworm, the cotton bollworm, the tobacco pink borer and the spodoptera litura is 60 days, observing the insect trapping quantity, and if the total quantity of the insects trapped in the last three days does not increase any more in three consecutive days, regarding the last day of the three days as the effective period, and finding the results in table 1.
Table 1 performance characterization test
The effective period of the currently marketed lure core for prodenia litura is about 2 months, and the effective period for oriental tobacco budworm, cotton bollworm and tobacco pink moth is 30-45 days, and the test results show that the lure core provided by the invention can obviously improve the effective period for different pests, and can generate synergistic interaction with pheromone by adopting triglyceride as a solvent, thereby obviously improving the lure effect and the lure quantity.
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (10)
1. The high-efficiency long-acting insect sex attractant is characterized in that the sex attractant comprises a carrier and a sex attractant, wherein the sex attractant is positioned in the carrier;
the sex attractant comprises insect active components and a solvent, wherein the weight ratio of the insect active components to the solvent is 1: (20-100), wherein the solvent is one or more selected from triglyceride, dichloromethane, n-hexane, petroleum ether and acetone.
2. The insect attractant core as claimed in claim 1, wherein said triglyceride comprises one or more of fatty triglyceride, aromatic triglyceride and cyclic triglyceride.
3. The efficient long-acting insect sex attractant core according to claim 2, wherein 1-3 fatty acids in the triglyceride fatty acid ester are unsaturated fatty acids.
4. A high-efficiency long-acting insect sex attractant core according to any one of claims 1 to 3, wherein the carrier is selected from rubber carriers and/or polyolefin carriers, and one side of the carrier is provided with an opening for injecting the sex attractant into the carrier.
5. The high-efficiency long-acting insect sex attractant core according to claim 4, wherein the rubber carrier is made of one or more materials selected from the group consisting of natural devulcanized rubber, styrene butadiene rubber, silicone rubber, butadiene rubber, chloroprene rubber and fluororubber.
6. A high-efficiency long-acting insect sex attractant core as claimed in claim 5, wherein a rubber plug is arranged at the opening of the rubber carrier for sealing the opening, and a cavity is arranged inside the rubber carrier and the rubber plug.
7. The efficient long-acting insect sex attractant core according to claim 5, wherein the external diameter of the cross section of the rubber carrier increases from top to bottom, and the external diameter of the cross section of the lower side of the rubber carrier is 8-15 mm.
8. The high-efficiency long-acting insect sex attractant core according to claim 4, wherein the polyolefin carrier is made of one or more of polyethylene, polypropylene and polyvinyl chloride.
9. The efficient long-acting insect sex attractant core according to claim 8, wherein the thickness of the polyolefin carrier is 0.4-0.7 mm.
10. A method for preparing a high-efficiency long-acting insect sex attractant core according to any one of claims 1 to 9, which comprises the following steps: and injecting the sex attractant into the carrier, and sealing to obtain the lure core.
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